Caffeine Content in Coffee

Caffeine is chemically a xanthine alkaloid that acts as stimulant of the central nervous system. It ranks as the world's most popular psychoactive substance. Medically, caffeine is referred to as trimethylxanthine. In the United States, about 90 percent people consume caffeine every day, in one way or the other. We all have a fair idea regarding the caffeine content in coffee. Besides coffee, caffeine is present in other natural plant sources like tea, kola and guarana. Among the several food items, coffee beans is the main source for caffeine worldwide.

Though the FDA enlisted caffeine as a substance safe for consumption, consuming a high concentration is harmful for health. In some people, caffeine intake causes certain adverse effects like headache, sleep disorder, nervousness and irritability. Considering the various caffeine side effects, it is very important for us to learn the pros and cons of caffeine intake and the amount of caffeine in coffee and other beverages.

Caffeine Content in Coffee
The diuretic and stimulative properties of caffeine induce certain metabolic effects. Hence, consuming caffeinated beverages like tea, coffee, soft drinks and energy drinks aids in overcoming drowsiness and increasing alertness. The ingested caffeine is not retained in the body, but its effects are observed after 15 minutes and last for as long as 6 hours. This is the reason as to why, many people state that they cannot start their day without a cup of coffee in the morning. So, are you aware about the amount of caffeine content in a cup of coffee?

The amount of caffeine content in coffee varies significantly based on the coffee type and the mode of brewing. The usual drip-brewed coffee contains approximately 100-135 mg per cup (8 ounce size), while the espresso contains about 30 mg per ounce coffee and instant coffee contains about 95 mg per cup (8 ounce size). On a general note, drinking two to three brewed coffee cups a day is not harmful for people who are not hypersensitive to caffeine. Read more on nutrition facts for coffee.

Caffeine Sensitivity
Caffeine sensitivity is the term that refers to the body's responses towards caffeine intake. To be precise, the amount of caffeine that stimulates a person may vary, depending upon the body size and the sensitivity. The smaller the size of the individual, the lesser is the caffeine amount to produce effects and vice versa. People who take coffee several times a day require more concentration of caffeine than first time coffee drinkers to experience the same effect.

Decaffeinated Coffee and Other Products
It is to be borne in mind that decaffeinated coffee also contains caffeine. Nevertheless, the amount of caffeine in decaffeinated coffee is comparatively lesser (about 5-7 mg per 8 ounce cup) than the regular coffee. In medical science, caffeine is administered as a mild diuretic and cardiac stimulant. Commercially, caffeine is extracted as a white, crystalline and bitter powder, which is then used in various processed food items and pharmaceutical products. For example, pain killers, diet pills and common cold medications are formulated by using caffeine in specific concentrations.

Overall, caffeine is a highly addictive substance and is referred to as a commonly consumed drug. It works in the same brain stimulating mechanism as that of other strong drugs, but in a subtle way. As per studies, ingesting a very high dose of caffeine is fatal. Taking 10 gm of caffeine, which accounts to 170mg/kg of the body weight can lead to life-threatening symptoms. To be on the safer side, take a note of the caffeine content in coffee and keep it minimum, not more than 2-3 cups per day.

How Much Caffeine in a Cup of Coffee

How much caffeine in a cup of coffee? Have you ever given it a thought? I sincerely doubt it. The only 'thinking' that a coffee drinker usually does, is to contemplate on whether to opt for an expresso, a decaf, a cappuccino, a latte or a mocha, etc. In any case, the caffeine content in coffee is the last thing on our minds. However, as the wise old men say, "too much of anything is bad", similarly, the same applies in case of caffeine as well. Too much intake of caffeine is harmful to one's health. But then, just how much is too much? Well, in order to answer that question, it would be necessary to have an accurate idea about the amount of caffeine in coffee, wouldn't it? Of course it would. Here are some interesting numbers regarding the same.

How Much Caffeine is in a Cup of Coffee?
Well, to answer the above question, a general estimate is about 100 mg per cup. However, in reality, there can be no universal absolute number as such. Simply because, the caffeine content in a cup of coffee depends on a variety of factors, such as the type or the variety of coffee, the method of preparation, the serving size, etc. However, for your benefit, here is a sample chart to provide you with some useful numerical values pertaining to a few types of coffee.

How Much Caffeine in a Cup of Coffee - Comparative Chart

Type of Coffee     Amount of Caffeine
Instant Coffee (8 oz)     70 mg (approx)
Brewed Coffee (8 oz)     125 mg (approx)
Drip Coffee (8 oz)     145 mg (approx)
Cappuccino (8 oz)     75 mg (approx)
Expresso (2 oz)     90 mg (approx)
Cafè Latte (8 oz)     75 mg (approx)
Starbucks Expresso Solo (1 oz)     75 mg
Starbucks Expresso Doppio (2 oz)     150 mg
Dunkin' Donuts Coffee (16 oz)     180 mg (approx)
Starbucks Vanilla Latte (16 oz)     150 mg
Coffee Decaf (brewed) 8 oz     6 mg (approx)
Coffee Decaf (instant) 8 oz     3 mg (approx)

Adverse Effects of Caffeine
For those of you who are heavy coffee drinkers, beware! Excessive intake of caffeine is harmful for your health. Caffeine side effects are aplenty, and when consumed in an addictive manner or in excessive proportions, caffeine can have the following adverse effects on a person's health:

    * A person who gets addicted to caffeine (through coffee) may suffer from sleep disorders i.e. Insomnia. Drinking coffee (or for that matter, even tea) at, or around bed time is a bad idea simply because, once caffeine gets into your blood stream and begins to have its effect on your body, your tiredness will temporarily fade away and you will experience a state of alertness. This will naturally delay the process of sleep.
    * Excessive caffeine consumption may trigger panic attacks. Read more on the negative effects of caffeine on the body.
    * Contrary to what people think, coffee actually dehydrates you. Caffeine has diuretic properties and over-intake of caffeine may leave you severely dehydrated.
    * Addiction and dependency are two common side-effects of excessive caffeine intake. An addicted person cannot do without his daily dose of coffee, and failure to satisfy his caffeine cravings may lead to depression, nervousness and anxiety, in addition to other caffeine withdrawal symptoms.

I hope the aforementioned information has helped answer the query 'how much caffeine in a cup of coffee'. You can also read more on caffeine content in coffee. Take care!

Negative Effects of Coffee

Coffee, a beverage which is liked by many, is consumed by most of us on a daily basis. Though, drinking coffee makes you feel fresh and energetic, there are a few side effects associated with it. The negative effects of coffee are mainly due to the presence of caffeine and tannic acid in it. The negative effects of drinking coffee start appearing slowly but, once they affect the body, they are most of the times permanent and it is difficult to reverse the situation. Read more on caffeine content in coffee.

Negative Effects of Coffee Consumption

    * It heightens the energy levels for a short term. But, after you get used to it, even that cup of coffee will not show the results which it used to show previously. Hence, you will tend to drink more coffee which will develop an addiction for it. This negative effect of coffee on your health will also lead to adrenal exhaustion.
    * A person on medication should avoid coffee as it interferes with the medicines and hence, the effective result of it on the body. This negative effect of coffee on the body can cause serious problems as it blocks the medicines from working according to their desired way.
    * The caffeine present in coffee also interferes with a brain chemical named adenosine which helps in providing the calming effect.
    * Coffee might also give rise to constriction of blood vessels. This condition occurs due to the increase in the cortisol levels.
    * Young children should not be given coffee as it is difficult for them to digest it. Their liver cannot metabolize caffeine and hence, it remains in the body for 4 to 5 days. This can lead to sleeplessness and irritability.
    * Pregnant females should avoid coffee as it might lead to birth defects, miscarriage, premature birth and low birth weight.
    * Another negative effect of drinking coffee is, it can lead to sluggish sperms and also inability to conceive.
    * Coffee can damage the teeth which can cause yellowing of the teeth and also caries.
    * It even increases the blood sugar level. Hence, people with diabetes should avoid it. According to a research made, it causes deprivation of sleep among those who consume it in excess level.
    * Coffee is known to alter blood pressure and heart rate as well. It even leads to frequent urination. It is known to disturb the absorption of essential minerals and nutrients which are required for the functioning of the body. This can cause adverse effect on the body and can lead to diseases which are caused due to the lack of these minerals. Vitamin A, B and C are the ones which are most affected. Along with this, the absorption of minerals like iron, zinc and calcium are also affected due to the consumption of coffee.

If taken in moderate amount, coffee will not cause an adverse effect on the body. The side effects of coffee are observed only if it is consumed in excess amount. I guess, now after knowing the negative effects of coffee, you will think twice before consuming it. Its fine to consume it occasionally on moderate basis but its too much consumption should be strictly avoided.